Sunan At-Tirmidhi

Narrated Anas bin Malik: ""There was a cause of fright in Al-Madinah. So the Messenger of Allah (ﷺ) borrowed a horse of ours called Mandub. He said: 'I have not seen anything to be frightened of, and we found him to be (quick) like the sea.'"" [Abu 'Eisa said:] This Hadith is Hasan Sahih